I do plan on bypassing the HV relay. I don't see it being unsafe though. It'll have built in protection to prevent OEM battery damage. I won't be charging the batteries anywhere near as fast as regen braking so there shouldn't be any issues there. The only problem would be if somehow the dc-dc went crazy and created a short which is incredibly unlikely. If I was really concerned about that I could just add a ~15A fuse to take care of things.
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